Widely Tunable Single-Photon Source from a Carbon Nanotube in the Purcell Regime

被引：85
作者：
Jeantet, A. [1 ]
Chassagneux, Y. [1 ]
Raynaud, C. [1 ]
Roussignol, Ph. [1 ]
Lauret, J. S. [2 ]
Besga, B. [3 ]
Esteve, J. [3 ]
Reichel, J. [3 ]
Voisin, C. [1 ]
机构：
[1] Univ Paris Diderot, Univ Paris 06, CNRS, Ecole Normale Super,Lab Pierre Aigrain, 24 rue Lhomond, F-75005 Paris, France
[2] Univ Paris 11, Ecole Normale Super Cachan, CNRS, Aime Cotton Lab, F-91405 Orsay, France
[3] Univ Paris 06, CNRS, Ecole Normale Super, Lab Kastler Brossel, 24 rue Lhomond, F-75005 Paris, France
来源：
PHYSICAL REVIEW LETTERS | 2016年 / 116卷 / 24期
关键词：
SPONTANEOUS EMISSION;
D O I：
10.1103/PhysRevLett.116.247402
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The narrow emission of a single carbon nanotube at low temperature is coupled to the optical mode of a fiber microcavity using the built-in spatial and spectral matching brought by this flexible geometry. A thorough cw and time-resolved investigation of the very same emitter both in free space and in cavity shows an efficient funneling of the emission into the cavity mode together with a strong emission enhancement corresponding to a Purcell factor of up to 5. At the same time, the emitted photons retain a strong sub-Poissonian statistics. By exploiting the cavity feeding effect on the phonon wings, we locked the emission of the nanotube at the cavity resonance frequency, which allowed us to tune the frequency over a 4 THz band while keeping an almost perfect antibunching. By choosing the nanotube diameter appropriately, this study paves the way to the development of carbon-based tunable single-photon sources in the telecom bands.
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页数：5
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